Baker Hughes Masoneilan 496 Series Instruction Manual page 23

11. Special Conditions of Use
(Contd.)
11.2 Intrinsically safe apparatus:
Types 496-•58 , 496-•58/• and
Types 496-858, 496-858/ •
•
The cable entry must have a protection level at
least equal to IP6X according to EN 60529
standards.
•
For using in zone 0 (category 1) and with
aluminum housing, precautions must be taken to
prevent that apparatus is not subject to any
mechanical shocks.
•
The linear power supply of the position
transmitter / position contactor must be of a
certified type for a use in the explosive
atmospheres of IIC, IIB or IIA group and its
output circuit recognized of intrinsic safety.
•
The maximum characteristics of these sources
should not exceed the characteristics indicated
in § 4.2
11.3 Explosion proof apparatus:
Types 496-•57, 496-•57/•,
496-857, 496-857/•
•
When the ambient temperature is higher than
70°C, the user will have to choose a cable entry
and a cable compatible with the data of the table
below:
T ambient
70°C
75°C
80°C
85°C
•
The minimal temperature of the cable is indicated
on the serial plate.
•
When the ambient temperature is lower than
-20°C, the user will have to chose a cable entry
and a cable compatible with the lowest possible
ambient temperature. For reminder, 496-.57 and
496-.57/. series are certified up to -55°C.
© 2020 Baker Hughes Company. All rights reserved.
•
•
SI 33
GRAPHENE 702
MOLYKOTE 111 COMPOUND
MULTILUB
GRIPCOTT NF
•
•
T cable
75°C
80°C
85°C
90°C
Masoneilan 496 Series Position Transmitter ATEX Instruction Manual | 23
The cable entry must have a degree of protection
at least equal to IP66/67.
Use only the following greases for the
explosion- proof gaskets, shaft, cover threads,
cable gland and plug for Y237:
Type
All mechanical parts coupled with the limit switch
or transmitter and likely to generate a spark or a
hot surface will have to be the object, on behalf of
the user, an analysis of the risks in agreement
with the Directive 2014/34/EU. The user will have
to follow the conformity module adapted to the
zone in which it will be installed.
Explosion-proof joint:
• The explosion-proof shaft joint tolerance is
lower than one defined by the standard
EN 60079-1. It must be respected with a
maximum radial gap of 0.133mm.
• The length of explosion-proof joints is greater
than the one defined in the sheets of EN 60079-1.
• The explosion-proof joints are not intended to
be repaired.
Manufacturer
ORAPI
ORAPI
®
MOLYKOTE
®
MOLYKOTE
MOLYDAL